Comparison

Custom Running Intervals vs RunKit

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Custom Running Intervals

Create custom running workouts with flexible intervals based on time or distance. Track progress, build training plans, and analyze past runs with detailed results. Your data is private and stored securely on your device or iCloud.

Highlights
  • Configurable time or distance intervals
  • Repeatable interval blocks
  • Training plan calendar
  • Historical run analysis
  • Apple Watch monitoring
  • iCloud synchronization
  • Data privacy
Features
Read full description

This is a flexible custom interval timer and training scheduler with historical analysis, and you are the only one who has access to your data! As a runner, I’ve had challenges finding a running timer that can manage my more involved interval combinations. Custom Running Intervals allows you to build variable activities with repeatable blocks of intervals. Intervals can be by time or by distance with 3 intensities - walk, steady, and fast. You can repeat your intervals a specific or indefinite number of times, for a defined amount of time, or for a given distance. With an inexpensive upgrade, you can create as many combinations of repeatable sets in the variations you choose, build a training plan on a calendar, see results of past runs, and export results to other apps. Also, your data is only available to you - even I can’t see it. Your data will only exist on your phone, or in your own iCloud storage if you choose. If you save your data to iCloud (by default), you can view the results on any other iPhone or iPad that shares the same iCloud account. Features: 1. Configurable intervals - distance (miles, kilometers), time (hours, minutes, seconds). 2. Configurable repeat blocks of intervals - # of times (or until stopped), distance, time. 3. Clone activities (use an existing activity - repeats and intervals - as a basis to create a similar activity). 4. Apple Watch monitoring and control and heart rate (iPhone app must be started). 5. Configurable settings. 6. Audio cues by voice, tone, or both (in Settings). 7. Pause, Resume, or Stop an activity, Skip repeat blocks. 8. View current elapsed time, distance, interval progress, overall pace. 9. End an in-progress repeat block (and proceed to the next). 10. Results by interval and repeat block, as well as default distance unit (each mile or kilometer). 11. Results (including steps, time, distance, and pace) available immediately after run. 12. Map view to verify GPS location prior to starting run. 13. Map view of running route in results including markers by mile/kilometer and pauses. 14. Helpful on-screen guide when creating first activity and configuring. 15. Activities and results stored in iCloud for synchronization across devices and data loss prevention. Apple Watch If you have an Apple Watch, you can also start, pause, and stop an activity in progress from the watch. NOTE: the Apple Watch app (included with your iPhone download) communicates with the iPhone app, so the app must be started on both the watch and phone to use the watch app. Apple Watch Features: 1. View existing activity configurations. 2. Start an activity (if iPhone app is started). 3. Pause, Resume, or Stop an activity. 4. View current elapsed time, distance, interval progress, overall pace. 5. End an in-progress repeat block (and proceed to the next). Available Full Features (In App Purchase) 1. Configure an activity with multiple repeat blocks for more complex intervals (standard version allows one repeat block) 2. Add planned training runs on a Training Calendar for a selected custom interval (free version allows up to 5). 3. View and filter a graph of your pace over time for activities (free version allows up to 5 past runs). 4. View the results of your runs on the Training Calendar including a map of the route. weather conditions, elevation, pace, and heart rate. 5. Create repeatable training plans to easily add planned runs to the Training Calendar. 6. Sort your past results by date, total time of run, distance, and pack. 7. Export your results (current or history) in GPX format for importing to other trackers. 8. Fix GPS for anomalies. 9. Import results in GPX format from any tracker app. 10. Track miles run on your pairs of shoes. 11. Manually enter results for a run if you forget to track. 12. Manually edit the time and distance for a run. 13. Share a run with photo to social media and other apps. 14. Track a run on a cruise ship.

About

RunKit

Create, schedule, and execute custom workouts for a variety of sports. Plan multi-week training programs and sync them directly to your Apple Watch for seamless execution and real-time metrics. Track progress and get race-time predictions.

Highlights
  • Multi-step workout creation
  • Workout scheduling and calendar view
  • Apple Watch syncing
  • Support for multiple sports
  • Training plan building
  • Workout library management
Read full description

Build your running workout on iPhone. Run it on Apple Watch. RunKit is the fastest way to create custom running workouts for the Workout app: intervals, tempo, fartlek, hills, long runs. Set each step once, and your Watch guides you through every rep with pace and heart rate alerts. BUILD ANY WORKOUT • Warm-up, cooldown and as many interval blocks as you need • Reps and recoveries by time or distance • Targets per step: pace, heart rate, heart rate zone or cadence • Alerts with a tolerance (exact, ±5", ±10", ±15") • Presets, duplicate steps or whole workouts, notes on each session • Folders to keep your library tidy RUN IT ON YOUR WATCH • Your workout waits in the Workout app: just press start • Apple's native workout engine, with all its metrics and alerts • Running, walking, cycling, swimming, strength and more activity types SCHEDULE YOUR WEEK • Pick a day for each workout and see your week at a glance • Scheduled workouts sync to your Apple Watch automatically • Optional sync with your iPhone calendar NO PLAN YET? FOLLOW ONE OF OURS • Couch to 30 min in 4 weeks • 30 to 60 min in 6 weeks • 60 min to 10K in 8 weeks • 10K to half marathon in 8 weeks • 10K to marathon in 12 weeks Each plan is scheduled day by day, on the days you choose. NEED IDEAS? A gallery of ready-made workouts (easy runs, long runs, intervals, fartlek, tempo, hills, walk/run), added in a tap. KNOW YOUR RACE TIME Race-time predictions for 5K, 10K, half marathon and marathon, based on your Apple Health history. Apple and Apple Watch are registered trademarks of Apple Inc. ----------- RUNKIT PREMIUM Scheduling workouts to Apple Watch, training plans and the workout gallery are part of RunKit Premium. Payment will be charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage subscriptions and turn off auto-renewal in your Account Settings after purchase. Privacy Policy: https://qeezon.com/runkit/privacy-policy Terms of Use (EULA): https://qeezon.com/runkit/terms-of-use

Screenshots

Custom Running Intervals4 screens
RunKit4 screens

Verdict

The call

The clearest difference is review sentiment: RunKit at 87% against Custom Running Intervals's 0%. RunKit also leads on rating (4.8 vs 2.0) and update cadence (fortnightly vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Custom Running Intervals sells 1 one-off in-app purchase and RunKit sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

RunKit holds the better App Store score, 4.8 against 2.0. That said, the two scores are not equally well evidenced: RunKit has 56 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Custom Running Intervals's written reviews are positive against 87% of RunKit's.

UpkeepUpdate frequency

Custom Running Intervals ships an update every 3 months, RunKit fortnightly. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
Custom Running Intervals versus RunKit: the parameters behind the verdict, then further details
ParameterCustom Running IntervalsRunKit
PriceFreeFree
Rating2.0 (1 ratings)4.8 (56 ratings) — better
Positive reviews0.0% of reviews86.7% of reviews — better
Number of ratings156 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size11 MB56 MB
Age rating4+4+
DeveloperJohn MalloneeArnaud Dupuy

Customer experience

Custom Running Intervals

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

RunKit

All ratings53 ratings
Positive96.2%
Neutral0.0%
Negative3.8%
Written reviews45 reviews
Positive86.7%
Neutral2.2%
Negative11.1%

Bugs and requests

Custom Running Intervals

Not enough reviews yet to summarise bugs or requests.

RunKit

Reported bugs

7 issues
  • App not working after recent updates
  • Lost all data after reinstalling
  • Cannot share workouts through WhatsApp
  • Subscription error message
  • Sharing feature not working
Show 2 more
  • Cannot install on Apple Watch Series 3
  • No support response for bugs

Requested features

11 requests
  • Smaller pace integers
  • Ability to create workouts for strength training
  • Folders or tags for organizing workouts
  • Ability to connect headphones via Apple Watch for audio feedback
  • Desktop or web version for easier workout creation
Show 6 more
  • More sports options
  • Monthly calendar view for better organization
  • Ability to set up desired heart rate zone/cadence at once within runs
  • Add cycling activity
  • Retrieve default settings from the Exercise app for cycling power zones
  • Default to miles instead of KM

In-app purchases

1 purchases

Custom Running Intervals

One-time1
  • Full Capabilities$0.99
2 purchases

RunKit

Subscriptions2
  • Premium7 Days trial$3.991 Month
  • Premium7 Days trial$19.991 Year

Questions

Is Custom Running Intervals free?
Custom Running Intervals is free to download, with in-app purchases available.
Is RunKit free?
RunKit is free to download, with in-app purchases available.
Which has better reviews, Custom Running Intervals or RunKit?
RunKit is rated higher. Custom Running Intervals averages 2.0 out of 5 from 1 ratings, while RunKit averages 4.8 from 56 ratings.
Do Custom Running Intervals or RunKit have ads?
Neither Custom Running Intervals nor RunKit shows ads.
Which is updated more often, Custom Running Intervals or RunKit?
Custom Running Intervals ships an update every 3 months, and RunKit fortnightly. Most recently, Custom Running Intervals was updated on November 3, 2026 and RunKit on November 3, 2026.

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